Air conditioning system and building

Abstract

To provide an air conditioning system and a building capable of continuously suppressing generation of dew condensation on a duct surface.SOLUTION: An air conditioning system 100 includes: an air conditioner 10; a duct 20 disposed so as to connect the air conditioner 10 to an indoor side passing an inter-floor space 5, and capable of supplying cool air by cooling operation from the air conditioner 10 to the indoor side; a heat storage sheet 30 disposed so as to cover at least a part of the duct 20, and phase-changed from liquid to solid by cooling operation of the air conditioner 10; and a control device 50 capable of controlling the air conditioner 10. A phase-change temperature in a temperature dropping process of the heat storage sheet 30 is brought to a value which is not below a dew point temperature of air of the inter-floor space 5 in the execution of cooling operation of the air conditioner 10, and the control device 50 controls the air conditioner 10 to make it alternately repeat cooling operation and air blowing operation.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a duct-type air conditioning system and building technology.

Background Art

[0002] Conventionally, the technology of duct-type air conditioning systems has been well-known. For example, it is as described in Patent Document 1.

[0003] Patent Document 1 describes a duct-type whole-building air conditioning system for air conditioning a plurality of rooms in a building. In this whole-building air conditioning system, the air conditioned by the air conditioner is conveyed to each room via a duct, thereby configuring to air condition each room.

[0004] Here, during the cooling operation of the air conditioner, since cold air passes through the inside of the duct, the internal temperature of the duct decreases. When the internal temperature of the duct decreases, the air around the duct is also cooled. When the temperature of the air around the duct drops below the dew point temperature, condensation may occur on the surface of the duct.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention has been made in view of the above circumstances, and the problem to be solved is to provide an air conditioning system and a building that can continuously suppress the occurrence of condensation on the surface of the duct.

Means for Solving the Problems

[0007] The problems to be solved by the present invention are as described above. Next, means for solving this problem will be described.

[0008] That is, in claim 1, an air conditioning system for air conditioning the interior of a building, comprising: an air conditioner capable of executing a cooling operation and a blowing operation; a duct provided so as to connect the air conditioner and the interior through an inter-story space and capable of supplying cold air generated by the cooling operation from the air conditioner to the interior; a latent heat storage material provided so as to cover at least a part of the duct and undergoing a phase change from a liquid to a solid by the cooling operation of the air conditioner; and a control device capable of controlling the air conditioner, wherein the phase change temperature in the temperature drop process of the latent heat storage material is set to a value not lower than the dew point temperature of the air in the inter-story space when the cooling operation of the air conditioner is executed, and the control device controls the air conditioner so as to alternately repeat the cooling operation and the blowing operation.

[0009] In claim 2, the control device switches the air conditioner to the blowing operation before the temperature of the latent heat storage material drops below the dew point temperature after executing the cooling operation of the air conditioner.

[0010] In claim 3, a ventilation device capable of executing an exhaust operation for taking in the air in the interior of the building and exhausting the taken-in air to the inter-story space is provided, and the control device executes the exhaust operation of the ventilation device with a stronger air volume during the blowing operation of the air conditioner than during the cooling operation of the air conditioner.

[0011] In claim 4, the control device controls the air conditioner so that the operation time of the blowing operation of the air conditioner is the same length as the operation time of the cooling operation immediately before the blowing operation.

[0012] In claim 5, the phase change temperature in the temperature drop process of the latent heat storage material is set to a temperature exactly intermediate between the surface temperature of the duct when the cooling operation of the air conditioner is executed and the surface temperature of the duct when the blowing operation of the air conditioner is executed.

[0013] In claim 6, it is provided in the inter-story space and includes a humidity control material capable of adjusting the humidity of the air in the inter-story space.

[0014] In claim 7, it includes the air conditioning system according to any one of claims 1 to 6.

Advantages of the Invention

[0015] As an effect of the present invention, the following effects are achieved.

[0016] In claim 1, the occurrence of condensation on the surface of the duct can be continuously suppressed.

[0017] In claim 2, the occurrence of condensation on the surface of the duct can be further suppressed.

[0018] In claim 3, the recovery of the performance of the latent heat storage material can be promoted.

[0019] In claim 4, the difference between the heat dissipation amount and the heat storage amount of the latent heat storage material can be reduced, and thus the performance of the latent heat storage material can be sustained.

[0020] In claim 5, the difference between the heat dissipation amount and the heat storage amount of the latent heat storage material can be further reduced.

[0021] In claim 6, the occurrence of condensation on the surface of the duct can be further suppressed.

[0022] In claim 7, the occurrence of condensation on the surface of the duct can be continuously suppressed.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0024] Hereinafter, first, with reference to FIG. 1, an outline of a house 1 in which an air conditioning system 100 according to an embodiment of the present invention is provided will be described.

[0025] The house 1 is an example of a building in which the air conditioning system 100 is provided. FIG. 1 shows a two-story detached house (house 1). FIG. 2 shows the intermediate space 5 (the ceiling space of the first floor part) between the first floor part and the second floor part of the two-story detached house (house 1).

[0026] As shown in FIG. 1, in the first floor part of the house 1, mainly the first floor living room 2 is provided. In the second floor part of the house 1, mainly the second floor living room 3 and the machine room 4 are provided.

[0027] Next, with reference to FIGS. 1 to 3, the configuration of the air conditioning system 100 will be described.

[0028] The air conditioning system 100 is a duct-type whole-house air conditioning system that air conditions the indoor spaces of each room in the house 1. In the present embodiment, the air conditioning system 100 performs heating and cooling of the first floor living room 2 and the second floor living room 3. The air conditioning system 100 mainly includes an air conditioner 10, a duct 20, a heat storage sheet 30, a ventilation device 40, and a control device 50.

[0029] The air conditioner 10 shown in FIGS. 1 and 3 is for air-conditioning the indoor space of the house 1. The air conditioner 10 is provided in the machine room 4. The air conditioner 10 can be operated (cooling operation and heating operation) to adjust the indoor temperatures of each room (the first-floor living room 2 and the second-floor living room 3) of the house 1. The air conditioner 10 is connected to an outdoor unit (not shown) and can circulate refrigerant with the outdoor unit. The air conditioner 10 adjusts the temperature of the indoor air sucked in through a supply duct (not shown) by performing heat exchange between the indoor air and the refrigerant, and is configured to discharge the air to the first-floor living room 2 and the second-floor living room 3 through a duct 20 described later. Further, the air conditioner 10 can perform a blowing operation of only blowing air to the first-floor living room 2 and the second-floor living room 3.

[0030] The duct 20 shown in FIGS. 1 and 2 constitutes a supply air path for sending air from the air conditioner 10 to the first-floor living room 2 and the second-floor living room 3. The duct 20 is provided so as to connect the air conditioner 10 to the first-floor living room 2 and the second-floor living room 3. The duct 20 is formed in a cylindrical shape through which air can flow inside. One end of the duct 20 is connected to the air conditioner 10. The duct 20 is formed to extend to the first-floor living room 2 and the second-floor living room 3 while being appropriately bent from the air conditioner 10. More specifically, the duct 20 extends to the first-floor living room 2 through the inter-story space 5 (between the first-floor ceiling 2a of the first-floor living room 2 and the second-floor floor 3a of the second-floor living room 3) above the ceiling of the first-floor living room 2 (see FIG. 2). Further, the duct 20 extends to the second-floor living room 3 through above the ceiling of the second-floor living room 3.

[0031] By providing the air conditioner 10 and the duct 20 in this way, during the heating operation of the air conditioner 10, warm air from the air conditioner 10 is supplied to each room (the first-floor living room 2 and the second-floor living room 3) of the house 1 through the duct 20. Also, during the cooling operation of the air conditioner 10, cool air from the air conditioner 10 is supplied to each room (the first-floor living room 2 and the second-floor living room 3) of the house 1 through the duct 20.

[0032] The heat storage sheet 30 shown in FIG. 2 utilizes the latent heat absorbed and released when a substance undergoes a phase change for heat storage. The heat storage sheet 30 is constituted by encapsulating a latent heat storage material such as paraffin in an encapsulating layer. The heat storage sheet 30 is formed in a soft plate shape and is provided so as to cover the outer peripheral surface of the duct 20. The thickness of the heat storage sheet 30 can be set to any value, for example, about 5 mm. The heat storage sheet 30 is provided over the entire extending direction of the duct 20.

[0033] FIG. 4 shows the relationship between the temperature of the heat storage sheet 30 and the apparent specific heat. Here, the "apparent specific heat" is obtained by adding the effect of latent heat due to a phase change to the original specific heat. As shown in FIG. 4, the heat storage sheet 30 is formed so as to undergo a phase change (solidification) from a liquid to a solid at a predetermined phase change temperature (about 24°C in this embodiment) during the temperature drop process. Here, the "phase change temperature" of the heat storage sheet 30 is the temperature at which the apparent specific heat peaks in the latent heat region of the heat storage sheet 30.

[0034] The phase change temperature during the temperature drop process of the heat storage sheet 30 is set to be higher than the duct surface temperature during the cooling operation of the air conditioner 10. As shown in FIG. 5, during the cooling operation of the air conditioner 10 (set temperature 26°C), when the temperature inside the duct (the internal temperature of the duct 20) is 10°C, the ambient environmental temperature (the air temperature around the duct 20 in the inter-floor space 5) is 22°C, and the duct surface temperature (the surface temperature of the duct 20) is 20°C, a heat storage sheet 30 having a phase change temperature higher than the duct surface temperature (20°C) during the cooling operation of the air conditioner 10 (about 24°C) is used during the temperature drop process. Thereby, during the cooling operation of the air conditioner 10, the heat storage sheet 30 is deprived of heat (radiates heat) by the duct 20 and undergoes a phase change (solidification) from a liquid to a solid.

[0035] Further, the phase change temperature during the temperature drop process of the heat storage sheet 30 is set to a value that does not fall below the assumed dew point temperature of the air in the intermediate space 5 during the cooling operation of the air conditioner 10. Here, the "assumed dew point temperature" is an assumed value of the dew point temperature of the air in the intermediate space 5 during the cooling operation of the air conditioner 10. As shown in FIG. 5, when the ambient environment temperature (the air temperature around the duct 20 in the intermediate space 5) is 22°C and the assumed dew point temperature of the air in the intermediate space 5 is lower than 22°C, the heat storage sheet 30 having a phase change temperature during the temperature drop process higher than the assumed dew point temperature of the air in the intermediate space 5 during the cooling operation of the air conditioner 10 (about 24°C) is used.

[0036] Also, as shown in FIG. 4, the heat storage sheet 30 is formed to undergo a phase change (melting) from a solid to a liquid at a predetermined phase change temperature (about 29°C) during the temperature increase process. Further, the phase change temperature (about 29°C) during the temperature increase process of the heat storage sheet 30 is set to a value that does not exceed the set upper limit temperature (for example, 29°C) of the cooling operation of the air conditioner 10. Thereby, the heat loss (radiant heat only) of the duct 20 during the cooling operation of the air conditioner 10 can be reduced.

[0037] Here, during the cooling operation of the air conditioner 10, cold air flows inside the duct 20. When cold air flows inside the duct 20, the air around the duct 20 is also cooled. Then, if the heat storage sheet 30 is not provided, the temperature of the air around the duct 20 may fall below the dew point temperature of the air, and condensation may occur on the surface of the duct 20.

[0038] Therefore, in the air conditioning system 100 according to the present embodiment, by covering the outer peripheral surface of the duct 20 with the heat storage sheet 30, a decrease in the temperature of the surface of the duct 20 is suppressed, and thus the occurrence of dew condensation on the surface of the duct 20 is suppressed. More specifically, when the air conditioner 10 performs a cooling operation, the heat storage sheet 30 is deprived of heat by the duct 20 (i.e., dissipates heat). As a result, the heat storage sheet 30 (the latent heat storage material thereof) undergoes a phase change (solidification) from a liquid to a solid. During the phase change due to heat dissipation of the heat storage sheet 30, the temperature of the heat storage sheet 30 is maintained substantially constant. Therefore, a decrease in the temperature of the air around the duct 20 can be suppressed.

[0039] The ventilation device 40 ventilates the interior of the house 1. For example, a ventilation fan is used as the ventilation device 40. The ventilation device 40 is provided on the first floor ceiling 2a. The ventilation device 40 can perform an exhaust operation of taking in the air inside the first floor living room 2 and supplying the taken-in air to the inter-floor space 5. Although not shown in FIG. 1, the ventilation device 40 may also be provided in the second floor living room 3.

[0040] The ventilation device 40 can change the air volume (exhaust volume) during the exhaust operation. The ventilation device 40 may change to an arbitrary air volume steplessly, or may change to a predetermined air volume stepwise. In the present embodiment, it is assumed that the ventilation device 40 can perform the exhaust operation in two operation modes: a weak operation with a relatively small air volume and a strong operation with an air volume larger than that of the weak operation.

[0041] The control device 50 shown in FIG. 3 controls the operations of the air conditioner 10 and the ventilation device 40. The control device 50 includes a storage unit such as a RAM, a ROM, and an HDD, and an arithmetic processing unit such as a CPU. Various information and programs for controlling various components of the air conditioning system 100 are stored in the control device 50.

[0042] Here, as described above, during the cooling operation of the air conditioner 10, the heat storage sheet 30 dissipates heat and undergoes a phase change (solidification) from a liquid to a solid. The heat storage sheet 30 generally maintains a constant temperature for a while during heat dissipation, but when the phase change is completed (all latent heat storage materials change to a solid), the performance of the heat storage sheet 30 (the effect of suppressing temperature drop) is lost. Therefore, in order to restore the performance of the heat storage sheet 30, it is necessary to store heat (absorb heat) in the heat storage sheet 30 again.

[0043] Therefore, in the air conditioning system 100 according to the present embodiment, the control device 50 controls the air conditioner 10 so as to alternately repeat the cooling operation and the air supply operation of the air conditioner 10.

[0044] Specifically, after executing the cooling operation of the air conditioner 10, the control device 50 switches the air conditioner 10 to the air supply operation before the temperature of the heat storage sheet 30 drops below the assumed dew point temperature of the intermediate space 5. That is, the cooling operation time (the duration of the cooling operation) of the air conditioner 10 is set so that the temperature of the heat storage sheet 30 does not drop below the assumed dew point temperature of the intermediate space 5. The cooling operation time (the duration of the cooling operation) of the air conditioner 10 is determined in advance according to the surface temperature of the duct 20, the temperature and humidity of the air in the intermediate space 5, and the performance of the heat storage sheet 30, etc. The control device 50 operates the air conditioner 10 in the cooling operation for the predetermined time, and then switches to the air supply operation.

[0045] For example, as shown in FIG. 6, the control device 50 operates the air conditioner 10 in the cooling operation from 6:00 to 9:00. Also, the control device 50 operates the air conditioner 10 in the air supply operation from 9:00 to 12:00. Also, the control device 50 operates the air conditioner 10 in the cooling operation from 12:00 to 20:00. Also, the control device 50 operates the air conditioner 10 in the air supply operation from 20:00 to 6:00 the next day.

[0046] By operating the air conditioner 10 in the blowing operation after the cooling operation in this way, the internal temperature and surface temperature of the duct 20 rise above those during the cooling operation and reach 28°C as shown in FIG. 5, for example. As a result, the heat storage sheet 30 extracts heat (stores heat) from the duct 20, and the phase change from solid to liquid (melting) progresses. Therefore, the performance of the heat storage sheet 30 (the effect of suppressing temperature drop) can be restored.

[0047] By repeating the cooling operation and the blowing operation of the air conditioner 10 alternately in this way, it is possible to suppress the complete phase change (solidification) of the heat storage sheet 30 from liquid to solid due to the cooling operation of the air conditioner 10. Therefore, the performance of the heat storage sheet 30 (the effect of suppressing temperature drop) can be sustained, and thus the occurrence of dew condensation on the surface of the duct 20 can be continuously suppressed.

[0048] In addition, the control device 50 changes the operation mode of the ventilation device 40 according to whether the operation mode of the air conditioner 10 is the cooling operation or the blowing operation. Specifically, the control device 50 operates the ventilation device 40 in a weak operation while the air conditioner 10 is in the cooling operation. On the other hand, the control device 50 operates the ventilation device 40 in a strong operation while the air conditioner 10 is in the blowing operation.

[0049] By operating the ventilation device 40 in a strong operation during the blowing operation of the air conditioner 10 in this way, a large amount of the indoor air of the first-floor living room 2 is supplied to the inter-floor space 5. Thereby, the heat exchange between the relatively warm air in the inter-floor space 5 and the heat storage sheet 30 (that is, the heat storage of the heat storage sheet 30) can be promoted. By the heat storage of the heat storage sheet 30, the phase change of the portion that has changed to solid back to liquid (melting) can be promoted. Thereby, the recovery of the performance of the heat storage sheet 30 can be promoted.

[0050] In addition, the control device 50 controls the air conditioner 10 so that the operation time of the air supply operation of the air conditioner 10 is the same as the operation time of the cooling operation immediately before the air supply operation. For example, as shown in FIG. 6, after the control device 50 operates the air conditioner 10 in the cooling operation for 3 hours (from 6:00 to 9:00), the control device 50 operates the air conditioner 10 in the air supply operation for 3 hours (from 9:00 to 12:00). Further, after the control device 50 operates the air conditioner 10 in the cooling operation for 8 hours (from 12:00 to 20:00), the control device 50 operates the air conditioner 10 in the air supply operation for 8 hours (from 20:00 to 6:00 the next day). Thereby, the difference between the heat radiation amount and the heat storage amount of the heat storage sheet 30 can be reduced, and thus the performance of the heat storage sheet 30 can be maintained.

[0051] Furthermore, the phase change temperature in the temperature drop process of the heat storage sheet 30 is set to be exactly the intermediate value between the surface temperature of the duct 20 when the cooling operation of the air conditioner 10 is executed and the surface temperature of the duct 20 when the air supply operation of the air conditioner 10 is executed. For example, as shown in FIG. 5, the phase change temperature in the temperature drop process of the heat storage sheet 30 is set to be exactly the intermediate temperature (24°C) between the surface temperature of the duct 20 (20°C) when the cooling operation of the air conditioner 10 is executed and the surface temperature of the duct 20 (28°C) when the air supply operation of the air conditioner 10 is executed. Thereby, the difference between the heat radiation amount and the heat storage amount of the heat storage sheet 30 can be further reduced.

[0052] As described above, the air conditioning system 100 according to the present embodiment is an air conditioning system 100 for air-conditioning the first-floor living room 2 and the second-floor living room 3 (indoors) of the house 1 (building), an air conditioner 10 capable of executing a cooling operation and an air supply operation, a duct 20 provided so as to connect the air conditioner 10 and the first-floor living room 2 (indoors) through the inter-floor space 5 and capable of supplying the cold air generated by the cooling operation from the air conditioner 10 into the room, a heat storage sheet 30 (latent heat storage material) provided so as to cover at least a part of the duct 20 and which changes from a liquid to a solid by the cooling operation of the air conditioner 10, a control device 50 capable of controlling the air conditioner 10, and The phase change temperature in the temperature drop process of the heat storage sheet 30 is set to a value that does not fall below the dew point temperature of the air in the intermediate space 5 when the cooling operation of the air conditioner 10 is executed. The control device 50 controls the air conditioner 10 so as to alternately repeat the cooling operation and the air supply operation.

[0053] With such a configuration, the occurrence of dew condensation on the surface of the duct 20 can be continuously suppressed. Specifically, during the cooling operation of the air conditioner 10, when the heat storage sheet 30 (latent heat storage material) changes phase from a liquid to a solid, the temperature drop of the air around the duct 20 can be suppressed, and thus the occurrence of dew condensation on the surface of the duct 20 can be suppressed. Furthermore, by controlling the air conditioner 10 so as to alternately repeat the cooling operation and the air supply operation, after the phase change of the heat storage sheet 30 from a liquid to a solid has progressed, the phase change from a solid to a liquid can be intentionally promoted. Therefore, the performance of the heat storage sheet 30 can be maintained.

[0054] Also, the control device 50 switches the air conditioner 10 to the air supply operation before the temperature of the heat storage sheet 30 falls below the dew point temperature after the cooling operation of the air conditioner 10 is executed.

[0055] With such a configuration, the occurrence of dew condensation on the surface of the duct 20 can be further suppressed. Specifically, by switching the air conditioner 10 from the cooling operation to the air supply operation before the temperature of the heat storage sheet 30 falls below the dew point temperature of the air in the intermediate space 5 where the duct 20 is provided, it is possible to suppress the completion of the phase change of the heat storage sheet 30 from a liquid to a solid and the loss of performance (the effect of suppressing temperature drop). Therefore, the performance of the heat storage sheet 30 can be maintained.

[0056] Also, the air conditioning system 100 according to the present embodiment It is equipped with a ventilation device 40 that can take in the air in the first-floor living room 2 (indoors) of the house 1 (building) and exhaust the taken-in air to the space between floors 5. The control device 50 During the air supply operation of the air conditioner 10, it performs the exhaust operation (strong operation) of the exhaust device with a stronger air volume than during the cooling operation of the air conditioner 10.

[0057] With such a configuration, it is possible to promote the recovery of the performance of the heat storage sheet 30 (latent heat storage material). Specifically, it is possible to promote the heat exchange (that is, the heat storage (heat absorption) of the heat storage sheet 30) between the relatively warm air supplied to the space between floors 5 by the ventilation device 40 and the heat storage sheet 30 (latent heat storage material), and thus it is possible to promote the recovery of the performance of the heat storage sheet 30.

[0058] Also, the control device 50 controls the air conditioner so that the operation time of the air supply operation of the air conditioner 10 is the same as the operation time of the cooling operation immediately before the air supply operation.

[0059] With such a configuration, it is possible to reduce the difference between the heat dissipation amount and the heat storage amount of the heat storage sheet 30 (latent heat storage material), and thus it is possible to sustain the performance of the heat storage sheet 30.

[0060] Also, the phase change temperature in the temperature drop process of the heat storage sheet 30 is set to a temperature exactly in the middle between the surface temperature of the duct 20 during the execution of the cooling operation of the air conditioner 10 and the surface temperature of the duct 20 during the execution of the air supply operation of the air conditioner 10.

[0061] With such a configuration, it is possible to further reduce the difference between the heat dissipation amount and the heat storage amount of the heat storage sheet 30 (latent heat storage material).

[0062] Also, the house 1 (building) according to this embodiment is equipped with an air conditioning system 100.

[0063] With such a configuration, it is possible to continuously suppress the occurrence of dew condensation on the surface of the duct 20.

[0064] As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0065] For example, in this embodiment, the building according to the present invention is not limited to the house 1, and may be other buildings such as department stores, shopping malls, schools, and buildings.

[0066] Also, in this embodiment, the air conditioning system 100 is assumed to be a whole-building air conditioning system that air-conditions the rooms on each floor by one air conditioner 10. However, an air conditioner 10 may be provided on each floor to perform air conditioning.

[0067] Also, in this embodiment, the heat storage sheet 30 is assumed to be provided over the entire extending direction of the duct 20. However, it may be provided in a part of the extending direction of the duct 20.

[0068] Also, in this embodiment, the cooling operation time (duration of continuous cooling operation) of the air conditioner 10 is assumed to be preset according to the surface temperature of the duct 20, the temperature and humidity of the air in the inter-floor space 5, and the performance of the heat storage sheet 30, etc. However, a sensor capable of detecting the temperature of the heat storage sheet 30 may be provided, and it may be determined based on the detection result of the sensor. That is, the switching between the cooling operation and the blowing operation of the air conditioner 10 may be performed based on the detection result of the temperature of the heat storage sheet 30 by the sensor.

[0069] Next, with reference to FIG. 7, the configuration of the air conditioning system 200 according to the second embodiment of the present invention will be described. Hereinafter, the same components as those in the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted.

[0070] The air conditioning system 200 according to the second embodiment further includes a humidity control material 60.

[0071] The humidity control material 60 suppresses changes in absolute humidity. The humidity control material 60 is formed in a plate shape and is provided on the back surface of the first-floor ceiling 2a (the surface on the side of the inter-floor space 5). As the humidity control material 60, for example, a humidity control gypsum board is used.

[0072] By providing the humidity control material 60 in this way, the dew point temperature of the air in the inter-floor space 5 can be lowered, and thus the risk of condensation on the surface of the duct 20 can be reduced.

[0073] As described above, the air conditioning system 200 according to the second embodiment is provided in the inter-floor space 5 and includes a humidity control material 60 capable of adjusting the humidity of the inter-floor space 5.

[0074] With such a configuration, the occurrence of condensation on the surface of the duct 20 can be further suppressed.

Description of Reference Numerals

[0075] 1 House 5 Inter-floor space 10 Air conditioner 20 Duct 30 Heat storage sheet 40 Ventilator 50 Control device 60 Humidity control material 100, 200 Air conditioning system

Claims

1. An air conditioning system for air conditioning the interior of a building, comprising: an air conditioner capable of performing a cooling operation and a blowing operation; a duct provided to connect the air conditioner and the interior through an inter-floor space and capable of supplying cold air generated by the cooling operation from the air conditioner to the interior; a latent heat storage material provided to cover at least a part of the duct and undergoing a phase change from a liquid to a solid by the cooling operation of the air conditioner; a control device capable of controlling the air conditioner; wherein the phase change temperature in the temperature drop process of the latent heat storage material is set to a value not lower than the dew point temperature of the air in the inter-floor space when the cooling operation of the air conditioner is executed; the control device controls the air conditioner so as to alternately repeat the cooling operation and the blowing operation; an air conditioning system.

2. The control device switches the air conditioner to the blowing operation before the temperature of the latent heat storage material drops below the dew point temperature after the cooling operation of the air conditioner is executed. The air conditioning system according to Claim 1.

3. comprising a ventilation device capable of performing an exhaust operation of taking in the air in the interior of the building and exhausting the taken-in air to the inter-floor space, the control device executes the exhaust operation of the ventilation device with a stronger air volume during the blowing operation of the air conditioner than during the cooling operation of the air conditioner. The air conditioning system according to Claim 1.

4. The control device controls the air conditioner so that the operation time of the blowing operation of the air conditioner is the same as the operation time of the cooling operation immediately before the blowing operation. The air conditioning system according to Claim 1.

5. The phase change temperature in the temperature drop process of the latent heat storage material is set to a temperature exactly intermediate between the surface temperature of the duct when the cooling operation of the air conditioner is executed and the surface temperature of the duct when the blowing operation of the air conditioner is executed. The air conditioning system according to Claim 4.

6. comprising a humidity control material provided in the inter-floor space and capable of adjusting the humidity of the air in the inter-floor space. The air conditioning system according to Claim 1.

7. A building comprising the air conditioning system according to any one of Claims 1 to 6.

Images